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 TM 55-1905-223-24-1
(5) Remove housing (15, 17, 19 or 21). Mark housing with cylinder location for reassembly.
(6) Remove and discard rocker lever housing gasket (20).
REPAIR
Repair of the rocker lever housing/cover group consists of cleaning, and replacement of valve cover gaskets,
rocker levers, plain hexagon nuts, setscrews, and rocker lever housing gaskets.
a. Clean the rocker lever housing (33, FIG. 2-28) and inspect as follows:
(1) Visually inspect the housing for cracks or damage, and replace if necessary.
(2) Visually inspect the capscrew holes in the housing for damaged threads.
(3) Visually inspect the rocker lever shaft bore. Remove any burns or sharp edges with emery cloth.
b.
Clean the rocker lever shafts (25) and inspect as follows:
(1) Use solvent to clean the rocker lever shaft. Use compressed air to clean out oil holes. Ensue holes
r
are not blocked.
(2) Clean the shaft bore.
(3) Visually inspect the shaft for cracks or damages.
(4) Visually inspect the thread conditions of the shafts with internal threads.
(5) Measure the rocker lever shaft outside diameter in the center and both ends of the shaft. The
measurement should be between 1.3710 inch (34.823 mm) and 1.3725 inch (34.862 mm).
(6) Replace the rocker lever shaft as necessary.
c. Clean the rocker levers [engine poppet valve rocker arms (13), exhaust levers ( ) and injector levers
9
(11)] with solvent and inspect as follows:
(1) Use compressed air to clean out oil holes. Ensure holes are not blocked.
(2) Visually check the rocker levers for cracks. Special attention should be given to the areas indicated in
(3) Check the ball end of rocker lever adjusting screw (5, FIG. 2-28) for damage.
(4) Replace the adjusting screw if the ball end is out of round or flat at the bottom.
2-104
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